Energy-absorber.



J. E. ENGLESSON.

ENERGY ABSORBER.

APPLIOATION FILED JUNE 2v, 1912.

1,090,100, Patented Mar. 1o, 1914n WITNESEEE.- M INVENTQE: if? R- eQ/d, 6MM

AT'TDRNEY.

STATES PATENT .,llilClel..

JOHN ELOV ENGLESSON, OF KARLSKRONA, SWEDEN, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO ALLIS-CHALMERS MANUFACTURING COMPANY, A CORPORATION OF DELAWARE.

ENERGY-ABSORBER.

renonce.

To all 107mm t may concern:

Be it known that I, JOHN lilnov Encens SON, a subject of the King of Sweden, re siding at Karlskrona, Sweden, have invented a certain new and useful Improvement in Energyuibsorbers, of which the following is a. specification.

This invention relates to improvements in the construction of devices adapted to absorb the energy of a jet of fluid, such as water, which is delivered with considerable velocity from a noi/.Zie or other valve device.

The object of the invention is to provide a device which will effectively absorb the energy of a jet of [luid delivered with considerable velocity from a valve device, without permitting `undesirable wearing away of the absorbing or arresting medium.

A clear conception of an embodiment of the invention `may be had by referring to the drawing accompanying and forming a part of this specification in which like reference characters designate the same parts in the different views.

Figure l is a central vertical section through an energy absorber and valve device, Fig. 2 is a transverse horizontal section through the energy absorber, the scetion being taken along the line HMH of Fig. l looking in the direction of the arrow.

The energy absorber as disclosed consists essentially of a hollow conical casing 8 having` an apex portion il() at one end thereof and a reentrant portion 9 at the opposite end thereof. The inlet G connects with an opening` through the apex portion l0. The free discharge ll. connects with an opening through the reentrant portion t) at the base of the casing 8. The valve l is co-axial with the conical casing 8 and is adapted. to control the inlet passage through the inlet portion l0 at the apex of the conical casing 8.

The valve actuating cylinder T is divided into upper and lower piston chambers by the piston 8. The piston 3 is fixed to the upper end of the valve stem 2, the lower end of which carries the valve l. Ports fl, 5 are adapted to admit and exhaust fluid to and from the upper and lower piston chambers respectively thereby providing means for positioning or adjusting the valve l.

During the normal operation of the de vice, fluid under pressure is admitted to the inlet (i from which it passes through the apex portion l() of the conical casing S. If the Specification of Letters Patent.

Application filed June 27', 1912.

Patented Mar. 10, 1914.

Serial No. 706,309.

valve l is positioned away from the walls of the casing S, as shown in Fig. l, an annular passage connecting the inlet (j with the interior of the easing S is formed. Fluid under pressure from the inlet o may then pass in the form of an annular jet, through the valve l and along` the diverging interior surface of the walls of the casing S. The jet after leaving the valve openingltakes the form of a film as it travels along the inner diverging surface of the walls of the easing S. then the `film of water reaches the reentrant portion S) of the easing S, it is deflected inwardly toward the axis of the casi ing S, If the fluid after leaving` the portion S) has sullicient velocity to carry it be youd the axis of the casing S, it strikes the fluid which is discharged from the portion 9 at a point opposite from itsI own leaving point, thereby auttumiticalluiv arresting its velocity. After the energy of the [luid has been thus absorbed, the [luid drops by gravity into the discharge 1l.

The valve 1 may be adjusted toward the diverging walls of the casing 8 to throttle the passage between the valve l and casing 8, by admitting fluid under pressure through the port 5 to the lower piston chamber. Any pressure which may have been previously established in the upper piston chamber is relieved through the, port d. The formation of the upper surface of the valve l, and the wall surface at the apex of the casing 8 adjacent the valve, is such that the fluid passing through the valve opening is `guided in the direction otI the diverging easing walls no matter what the position of the valve l, may be. The fluid during its passage along the diverging walls of the casing S is gradually forced to [low along the reentrant portion 9 of the easing S, thereby absorbing considerable energy by causing a change in the direction of flow of the lluid. lhe adjustment of the valve l away .from the diverging walls of the easing S is accomplished by relieving the pressure in the lower piston chamber through the port The form of the invention disclosed is particularly adapted for use in hydraulic shown, it being necessary only to have the walls diverging at a point directly adjacent the valve l on the discharge side thereof.

It should be generally understood that it is not desired to limit the invention to the eXact details herein shown and described for various modications will appear to a person skilled in the art.

It is claimed and desired to secure by Letters Patent,-

l. ln an energy absorber, a hollow conical casing, and a valve near the apenr of said casing adjustable toward and from the walls of said casing to form an annular port between the valve and casing, the base portion of the walls of said casing remote from said valve being rentrant, and said casing having a free discharge at said base portion.

2. In an energy absorber, a hollow casing having walls diverging from one end thereof, a free discharge remote from said end of said casing, and a valve near said end of said casing adjustable toward and from said walls to form a port between said valve and casing, a portion of the walls of said casing remote from said valve being rentrant.

3. ln an energy absorber, a hollow conical casing, and a valve near the apex of said casing and inovable toward said apeX to throttle the passage between said valve and casing, the base portion of the walls of said casing remote from said valve being reentrant, and said casing having a free discharge at said base portion.

4E. In an energy absorber, a hollow casing having walls diverging from one end thereof, a free discharge remote from said end of said casing, and a valve near said end of said casing and adjustable toward said end to throttle the passage between said valve and casing, a portion of the walls of said casing remote from said valve being rentrant.

5. In an energy absorber, a hollow casing forming a chamber free from obstruction and having the walls diverging from one end thereof, a free discharge remote from said end of said casing, and a valve at said end of said casing and adjustable toward said end to throttle the passage between said valve and casing, a portion of the walls of said casing remote from said valve being rentrant.

n testimony whereof, the signature of the inventor is aflixed hereto in the presence of two witnesses.

J. ELOV ENGLESSON.

Witnesses CrIAs. L. BYRON, W. H. LIEBER.

opief; of this patent may be obtained for ve cents each, by addressing the Commissioner o Pate-nts,

Washington, D. C. 

